consul



' motels,

WEN

it. All l J 0391M HARRIS, 03? LAKEW'QOD, 'OHIG.

v PROCESS 0'2? VJELDINE.

'lamlmm not b all w/ mm it may cones m:

lie it known that l, Jenn EIARBIB, e citinen. ol? the United States, residing at Lake Wood, in the county of Guyeboge and State of ll l'lio, llLlVE) invented at certain new and useful liner oven vt Processes of Well ing, which t ollowing is it full, clear, end exoct oles ription,

This invention relutes to e process of welding motels with gases, and has for its gene-rel object to enable the operation to be eccoinplislietl in a particularly eilicient end economical manner. c,

What is known in the art as the autogonous Weltling of metals such as stee with blow pipes or torches, has hitherto been performed almost exclusively witli 'ecety lene, the ecetylene being mingled with sub stontmlly pure oxygen for the "purpose of producing 2t neutral or slightly reducingllame. However, the use of this gas is not only expensi e, but the neutral fizlme is short until. more or less blunt, whereby the tips are liable to destruction by the lies-t of the molten .rnetol and, in the case of cutting, the slots are unnecessarily wide beclluse of the melting of the sides of the some? l ur tlr mm, the Home is liable to lie, tbock wi n. the tins because oi? the shortness of the cones and the relatively low igniting point of the ges, wliile the gas, at 200 C., begins to polymerize, producing en excess of carbon in. the flame, and requiring for combustion of such carbon more oxygen than the pipe has been adjusted to supply.

It is the object of my invention to-acconn nil-sh the eutogenoous Welding of such anti especially of steel, in and through the use, in o blow pipe or torch, of e gaseous mixture which is not only for more economical than ecetylene-wliicli has heretofore been employed to the practical exclusion of all other gases-tut one which vill prevent the production of e film of oxid of iron, thus enabling me to secure an ideal Welding.

It has been attempted to employ hydro gen for the purpose of Welding, but the use of the some lies been founcl to be in'ipracti cable. It is extremely (liffieult to so adjust the hydrogen and oxygen as to produce a neutral flame which is welding purposes. When. so sidjustecl, howlever, the products of combustion ere Water vepor which, striking the reel hot iron in the presence of oxygen tic-om the etmospliere,

Specification of Letters Eat int.

suficiently hot forv lle tenteil Riley El), 1191?),

Application filerl Eloy 17, 191%}. Serial No. 285,173.

will be disuesociated into liyorogen snot oxygen, the oxygen producing a film of oxicl upon. the molten addeil metal and the hydrogen being-consumed by the oxygen from the atmosphere. Furthermore, the combustion of hydrogen. results in e colorless flame, so that it is extremely difficult to set the flame at the proper point with reference to the metal,

I am able to obviate the 109/?) end not more then about 20% by vol ume of acetylene. The combustion out this mixture with oxygen at the blow pipe tip will result in on inner cone ot higher teinperaiture then that secured by the combustion of bydnogen, and this cone will possess such a distinctive color as will eneblethe pipe conveniently to be set or adjusted with reference to the Work as Well as to secure it neutral lle ne or cone for Welding purposes which cone is longer and is more pointed than one producedby acetylene alone, clue to the feet that the igniting point Olintlio mixture is higher then the gniting point of acetylene end to the fact that tlie tem perature of tlie flame produces by the mine ture is lower than the temperature oif en acetylene ileune. Furtmermore, the sooty lene constituent of the mixture lie/villi; at lower ignition point tl the hydrogen, the cone or fierce employed for Weltling purposes will burn Within and be prot eet ed from radiation by on envelop of hydro-- gen burning in the presence of some ofhtne oxy 'e'n supplied from the pipe well as in t e presence of oxygen flowing in from the atmosphere. Furthermore, is ivell known, the temperature of the acetylene, burning in the mixture of hydrogen end oxygen, is above that at which the hydrogen alone, or the'liydrogen constituent of the acetylene, will combine with oxygen to form Water; and the envelop of burning hyfirogen prevents the reduction of this temperature through radiation to the point at which hydrogen will so combine with oxygen to form Witter. Hence no film of mild een be produced upon the iron, providecl that ordinary precautions ere taken for producing the neutral flame, due to the combustion of tlie acetylene {it the edges of the inner cone. I am, therefore, enabled to conveniently set the Home for Welding: purposes and to secure an xtremely eflicient Wel. Funtliermore, 1i am enabled to utilize objections by mining with hydrogen not less than about llll 

